This Studer card, with part number A949.0427, offers four analog microphone/line inputs, a great addition for your D21m system.

To use this Studer microphone and line input card, simply insert it into your D21m modular I/O system. Make sure your system is turned off before installation. Connect your microphones or line - level devices to the four available analog inputs. When using, keep the card in a clean and dry environment. Avoid exposing it to extreme temperatures or humidity. For maintenance, you can gently clean the card with a soft, dry cloth every few months. If you encounter any issues, consult the Studer support team.